U.S. stocks decline as investors wait on May employment data to be released Friday. Along with that investors wait on ECB to see if ECB President will continue his stimulus and commitment to keep borrowing costs at low levels. A final decision will not be made until June 5th.
The Dow slipped 0.16% to 16,717.49, while the S&P 500 fell 0.15% to 1,922.16 and the Nasdaq fell 0.3% to 4,226.32.
U.S. factory orders climbed 0.7 percent in April. Economists estimated a rise of 0.5 percent.
Gold futures ticked up 0.1% to $1,244.70 an ounce to snap a six-session losing streak, while crude-oil futures tacked on 0.2% to $102.66 a barrel.
Central-bank stimulus has helped propel the S&P 500 higher by as much as 184 percent from its bear-market low in March 2009.
The S&P 500 has hit 15 record highs this year, but is up just 4.1% year to date.